Sheet-metal door.



Patented Mar. 31, 1914,

BY W.

Md A TTORNE Y.

E. J. ZAHNER.

SHEET METAL DOOR.

APPLICATION FILED MAY 24. 1912. ,9050

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WITNESSES:

v one panel member tively with a corresponding number of EDWARD J'. ZAHNER, QF KANSAS CITY, MISSOURI.

` SHEET-METAL DOOR.

Specicatonof Letters Pat-ent.

' Patented Mar. 31, 1914.

Application led May 24, 1912. .Serial No. 699,554.

To all whom t may concern:

Be it known that I, EDWARD J. ZAHNER, a citizen of the United States, and a resident of Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Sheet-Metal Doors, of which the 'following is a specification.

My invention relates to improvements in doors.

f The objl ect of my door which is sanitary,

invention is to provide a is easily manufactured, and rigid in construction.

' cross section enlarged and partly broken away, on the line e-f of Fig. 1.

Similar reference characters designate similar parts in the different views.

The door has a hollow body comprising two right angled members which I term panel members, each of which forms one panel 1 and one side edge 2 of the body.

Each portion 2 at one longitudinal edge has an inwardly extending flange 3 which is {itted in a longitudinal groove 4 provided in the other panel member. Preferably said grooves 4 are formed by securing by spot welding or otherwise to the inner sides of the panel portions 1 ofthe panel members respectively longitudinal metal strips 5 having each an inwardly oifset portion 6 disposed at the inner side and overlapping the flange 3 of the opposite member.

To increase the strength and rigidity of the door I provide spacing means connecting the panel portions 1. Preferably this spacing means comprises one or more spacing members 7 secured to the inner side of and interlocked respecspacing members 8 respectively secured to the inner side of the other panel member. Preferably the spacing members 7 and 8 are disposed -longitudinally of the door, as shown in the drawings. The spacing members 7 and 8 are, preferably each of channel form and have their outer flanges 9 re-` spectively secured by spot welding or otherwise tothe inner sides of the panel members. The inner flanges 10 and 11 of the members 7 and 8 are disposed parallel with each other and abut against'each other so as to prevent the panel members moving to- .ward each other. The -flange 10 has an inwardly turned flange 12 located in a longitudinal groove formed by having the flange 11 provided .with a U-shaped extension 13, the groove facing t-he ange 10 of the member 8. Thisconstruction is best illustrated in Fig. 5.

Preferably the panel membershave secured respectively tothe inner sides of the side edge portions 9, flat bars 14 which serve to increase the strength and rigidity of the door. Channel end members 15 and 16 are secured-by spot welding or other sultable means to and between the panel members lat the upper and lower ends respectively. The upwardly extending flanges of the channel end member 15 have their upper edges disposed slightly below the up'- per edges of the mounted upon them a horizontal flat plate 17, which is secured by screws 18 to the horizontal portion of the member 15, the upper portion of the plate 17 being preferably flush with .the upper edges of the panel members.

In making the improved door, the strips 5, bars 14 and interlocking members 7 and 8 are attached to their respective panel members before said members have been interlocked with each other. The panel members are then interlocked with each other and the members 7 with the members .8 by forcing the panel members endwise relative to each other, the flanges 3 being slipped lengthwise into the grooves 4, andl the flanges 12 simultaneously drawn lengthwise into the grooves kof the U-shaped extensions 13 of the flanges 11. It will be noted that the interlocking spacing members 7 and 8 hold the panel members from lateral movement in any direction. members have been slid .to their proper positions, the end members 15 and 16 are mountpanel members and havev When -the panel' ed in their proper positions, after which the contacting portionsof the panel members may be gas or spot welded to each other in the usual well known manner. The end members 15 and 16 may now, also, be gas or spot welded to the panel members,

after position.

which -'the top plate 17 may be secured in My invention provides a door which light, reproof, strong, durable, rigid, and

' which presents perfectly smooth outer sur-'1 faces, thereby providingv a sanitary door partition spacing means including twoA memportion which abuts against the berssecured respectively to opposite inner sides of the body intermediate of the side edges of the body and abutting against each other to prevent movementl toward. each other, each member having a channel facing toward the side of the bodyl tov which saidl member is secured, one ange of each channel being .disposed in the channel of the other member. e A y, U

2.' A door'comprisingv a hollovvT body, and -two artition spacing members secured respectlvely to opposite inner sides of thebody intermediate of the side edgesv of the body, each member having a laterally extending terally eX tending portion of the other member, one oi said laterally extending portions terminatin in 5a channel which faces toward the Si e of the body to which the member having said portion is attached, the other later- 'ally vextending portion terminating 1n e fiange located in said channel. 3. A'door comprising a hollow body, anc

two channel partition spacing members havingv their outer fianges secured respectively to opposite inner sides'of the body-inter- -mediate of the side edges of the body, anc having their inner flanges provided with interlocking means for holding the member: from lateral movement relative to each other t. A door comprising a hollow body, anc

,two channel partition spacing members hav ing their outer flanges secured respectively -to opposite inner sides of the body inter mediatev of the side edges yof the body an( their inner anges disposed side by side, on inner flange having a U shaped return bend and the` other inner flange having a laterally turned portion disposed between the arm: of said U shaped return bend of theothei In testimony whereof, I have signed mj name to this specication in presence of tw( 4'subscribing witnesses.

I v EDWARD JQZAHNER; y'Witnessesz J.P." Morcin, l' JOHN R. HoULIs'roN..` 

